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5ghz wifi for T420?

T400/410/420 and T500/510/520 series specific matters only
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wrybread
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Posts: 67
Joined: Wed May 30, 2007 12:01 am
Location: San Francsico, CA

5ghz wifi for T420?

#1 Post by wrybread » Tue Dec 19, 2017 6:32 pm

I just picked up a T420 (full model is type 4236-ML2), and apparently it's onboard wifi card (Intel 112BNHMW, "Wireless-N 1000") doesn't support 5ghz. Oof.

Can anyone recommend a wifi card that will work with this model that supports 5ghz? I know at one time Lenovo restricted which cards would work with their laptops, so I'm trying to avoid that mistake.

theterminator93
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Posts: 930
Joined: Fri Oct 11, 2013 7:45 pm
Location: North Ridgeville, Ohio, United States

Re: 5ghz wifi for T420?

#2 Post by theterminator93 » Tue Dec 19, 2017 6:49 pm

Mine has the Centrino Advanced-N 6205, which does work with 5GHz. The Ultimate-N 6300 will also work (the W520 has one). Just make sure you get one with the Lenovo FRU on it to guarantee it will work without a BIOS mod.
Daily: T25 | W520 i7-2860QM·Quadro 2000m·IPS FHD | T420 i7-2640M·NVS 4200m·IPS FHD | X220 i7-2640M | T601F T9900·NVS 140M·IPS UXGA
Wife's: T61p T9500·2010 FX570m·WUXGA | X220T i7-2640M
Others: T61p·61·43·42p|X41T·24·23·22|G41|A31p·22m|i1200|TransNote|380D|365XD|701C|755C

wrybread
Freshman Member
Posts: 67
Joined: Wed May 30, 2007 12:01 am
Location: San Francsico, CA

Re: 5ghz wifi for T420?

#3 Post by wrybread » Tue Dec 19, 2017 7:01 pm

Thanks, ordered. For $6 shipped! I love old Thinkpads.

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